$3\mathrm{.}3$ Simulating a Queue with Two Servers $($Able and Baker$)$

The coming customer will choose Able when Able and Baker are free. What if the customers choose randomly instead of Able $(50\%$ for Able, $50\%$ for Baker$).$ Make the required changes to reflect this in your work.

Find:

a$)$ The expected waiting time for a customer in the queue.

b$)$ The expected number of customers in the system.

c$)$ The utilization of Able and the utilization of Baker.